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Introduction to Linux - A Hands on Guide

This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.

when I woke up in the morning I usually will try to compile my hello world program( nice intro huh?). In my RH8 machine, it compile but it gave me backward warning like this..

/usr/include/c++/3.2/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning use -Wno-deprecated.

It seems like iostream.h is obsolete. So I tried to remove the .h like the warning suggested, but it didn't work. My code can't recognize my "cout" when I remove the .h in my #include <iostream.h>.....

I was fumbling with the same problem and when I poked around I found the old compiler named as g++296 sitting there which does not give the above warning. Any ways, now I know why the code is not working for the new compiler